ABAP Select data from SAP table P2RQ_LSLPR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RQ_LSLPR table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to P2RQ_LSLPR. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the P2RQ_LSLPR table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_P2RQ_LSLPR TYPE STANDARD TABLE OF P2RQ_LSLPR,
      WA_P2RQ_LSLPR TYPE P2RQ_LSLPR,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <P2RQ_LSLPR> TYPE P2RQ_LSLPR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RQ_LSLPR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RQ_LSLPR
  INTO TABLE IT_P2RQ_LSLPR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RQ_LSLPR
*  INTO TABLE @DATA(IT_P2RQ_LSLPR2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_P2RQ_LSLPR INDEX 1 INTO DATA(WA_P2RQ_LSLPR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RQ_LSLPR ASSIGNING <P2RQ_LSLPR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RQ_LSLPR>-MANDT = 1.
<P2RQ_LSLPR>-DCT_PERNR = 1.
<P2RQ_LSLPR>-DCT_SEQNR = 1.
<P2RQ_LSLPR>-DCT_ROWID = 1.
<P2RQ_LSLPR>-PABRJ = 1.

ENDLOOP.

LOOP AT IT_P2RQ_LSLPR INTO WA_P2RQ_LSLPR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RQ_LSLPR-PABRP, sy-vline,
  WA_P2RQ_LSLPR-CSTAC, sy-vline,
  WA_P2RQ_LSLPR-CSTPC, sy-vline,
  WA_P2RQ_LSLPR-YRSRV, sy-vline,
  WA_P2RQ_LSLPR-YRSPC, sy-vline,
  WA_P2RQ_LSLPR-URART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RQ_LSLPR you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_P2RQ_LSLPR TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_P2RQ_LSLPR INTO WA_P2RQ_LSLPR.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit GJAHR, internal->external for field PABRJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P2RQ_LSLPR-PABRJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2RQ_LSLPR-PABRJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CSTAC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2RQ_LSLPR-CSTAC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2RQ_LSLPR-CSTAC.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P2RQ_LSLPR_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
PABRJ TYPE STRING,
PABRP TYPE STRING,
CSTAC TYPE STRING,
CSTPC TYPE STRING,
YRSRV TYPE STRING,
YRSPC TYPE STRING,
URART TYPE STRING,
ACCID TYPE STRING,
ENTHR TYPE STRING,
ACCHR TYPE STRING,
ENTVL TYPE STRING,
ACCVL TYPE STRING,
LBVAL TYPE STRING,
ESCPC TYPE STRING,
ESCON TYPE STRING,
ESCSB TYPE STRING,
INFPC TYPE STRING,
INFON TYPE STRING,
INFSB TYPE STRING,
BNDPC TYPE STRING,
BNDON TYPE STRING,
BNDVAL TYPE STRING,
WKSAL TYPE STRING,
KTART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RQ_LSLPR_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_P2RQ_LSLPR_STR-MANDT sy-vline 
WA_P2RQ_LSLPR_STR-DCT_PERNR sy-vline 
WA_P2RQ_LSLPR_STR-DCT_SEQNR sy-vline 
WA_P2RQ_LSLPR_STR-DCT_ROWID sy-vline 
WA_P2RQ_LSLPR_STR-PABRJ sy-vline 
WA_P2RQ_LSLPR_STR-PABRP sy-vline 
WA_P2RQ_LSLPR_STR-CSTAC sy-vline 
WA_P2RQ_LSLPR_STR-CSTPC sy-vline 
WA_P2RQ_LSLPR_STR-YRSRV sy-vline 
WA_P2RQ_LSLPR_STR-YRSPC sy-vline 
WA_P2RQ_LSLPR_STR-URART sy-vline 
WA_P2RQ_LSLPR_STR-ACCID sy-vline 
WA_P2RQ_LSLPR_STR-ENTHR sy-vline 
WA_P2RQ_LSLPR_STR-ACCHR sy-vline 
WA_P2RQ_LSLPR_STR-ENTVL sy-vline 
WA_P2RQ_LSLPR_STR-ACCVL sy-vline 
WA_P2RQ_LSLPR_STR-LBVAL sy-vline 
WA_P2RQ_LSLPR_STR-ESCPC sy-vline 
WA_P2RQ_LSLPR_STR-ESCON sy-vline 
WA_P2RQ_LSLPR_STR-ESCSB sy-vline 
WA_P2RQ_LSLPR_STR-INFPC sy-vline 
WA_P2RQ_LSLPR_STR-INFON sy-vline 
WA_P2RQ_LSLPR_STR-INFSB sy-vline 
WA_P2RQ_LSLPR_STR-BNDPC sy-vline 
WA_P2RQ_LSLPR_STR-BNDON sy-vline 
WA_P2RQ_LSLPR_STR-BNDVAL sy-vline 
WA_P2RQ_LSLPR_STR-WKSAL sy-vline 
WA_P2RQ_LSLPR_STR-KTART sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.